It came in like a wrecking ball. Well, a wrecking snowball. Two math majors at Reed College in Portland, Oregon, created a wintery masterpiece - a giant snowball weighing about 800 pounds. The students built it on the quad but decide to roll it along a walk, on the theory that a rolling ball gathers more snow. Then it got away from them, taking off down the hill and smashing into a dorm wall and crushing it.